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Showing 1 to 20 of 79 for “"Biochemical Oxygen Demand"”.
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The effect of agitation on the biochemical oxygen demand sewage
… to determine what effect agitation had upon the biochemical oxygen demand of sewage. In order to determine the effect of agitation, the composition of the sewage, the seed source, the temperature and the dilutions were held constant.
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A Probabilistic Analysis of Dissolved Oxygen-Biochemical Oxygen Demand Relationship in Streams
Made available in DSpace on 2014-12-08T23:57:08Z (GMT). No. of bitstreams: 1 6901374.pdf: 5253573 bytes, checksum: 7904012f6d198abd64683c7d8be5e73e (MD5) Previous issue date: 1968
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Correlation of biochemical oxygen demand with oxidation-reduction potential of settled sewage
… exists between the O-R potential and the biochemical oxygen demand of settled sewage. The source of the samples was the effluent end of the primary clarifier at the V.P.I. Sewage Disposal Plant. The investigation consisted essentially of performing the standard biochemical oxygen demand …
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Manometric determination of the biochemical oxygen demand of sulfite paper mill wastes
… determined by manometric measurement of the free oxygen utilized. In either case, the B.O.D. determination requires at least 24 hours. Since the free oxygen involved in the B.O.D. of a waste is utilized in metabolic processes of various microorganisms present, an increase in the number of …
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Biochemical oxygen demand reduction of semi-chemical neutral sulfite waste by heat hydrolysis
… (2) if pH, dilution and the addition of oxygen were factors that affected the reduction of B.O.D. These factors were determined by adjusting the raw liquor to the desired concentration and cooking the liquor in a closed container until certain conditions were obtained, namely, that of …
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Statistical Evaluation of Rapid Biochemical Oxygen Demand Test for Monitoring Municipal Wastewater Quality
… measuring wastewater quality include the 5-day biochemical oxygen demand (BOD5) and carbonaceous BOD (CBOD5). This thesis presents an alternative wastewater quality test that requires much less time to achieve valid results. This research addresses the precision and statistical validity of an …
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A laboratory study of reduction of the biochemical oxygen demand of synthetic sewage by Zoogloea ramigera
In order to improve the design and to control satisfactorily the operation of the modern sewage disposal and industrial waste treatment plants, a great deal of work remains to be done by competent sanitary engineers, biologists, and chemists. It is the general belief that the stabilization of …
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A model-based approach for the development of a bioelectrochemical sensor for biochemical oxygen demand in wastewater
… powering of remote sensors, and as sensors for biochemical oxygen demand or volatile fatty acids. After introducing bioelectrochemical systems and the basic principles and mechanisms of their operation, this thesis will focus on a model-based approach to developing a sensor based on a microbial …
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Application of the manometric technique to a study of the biochemical oxygen demand of a neutralized acid waste
The purpose of this investigation was to use the manometric method to determine the effect of the following variables on the B.O.D. values of a neutralized acid industrial waste: pH, type of seed, age of seed, adapted seed, dilution water, and dilution. In order to determine the effect of each …
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An evaluation of biochemical oxygen demand of organic wastes by measurement of carbon dioxide evolution from aerated activated sludge
The object of this research investigation was to establish whether or not a correlation exists between bottle B.O.D. and CO₂ liberated from a highly aerobic sewage-sludge mixture. The first part of the project consisted of reducing the number of variables in the operation to a minimum. To this end, …
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Estudo de comunidades incrustantes sobre painéis experimentais em três áreas da Baía de Guanabara, RJ, Brasil
… such as temperature, salinity, pH, dissolved oxygen (D.O) biochemical oxygen demand (B.O.D) ammonia, nitrite and nitrate were analysed.
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Removal of microorganisms and proteins from sewage and industrial waste with chlorinated solvents
… in terms of reduction of suspended solids, biochemical oxygen demand, and by increased weight of residue separable by sedimentation. The results showed that the process produced the following effects on settled sewage. Suspended solids were reduced by 85 percent, the weight of residue …
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The selective stimulation of respiration in mixed cultures of bacteria and protozoa
… of the study of the progression of the biochemical oxygen demand of soluble organic compounds in order to determine the validity of a short-term B. O. D. determination. The progression in soluble substrates of the B. O. D. exerted by a mixed culture of micro-organisms was found to be a …
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Ozone treatment of a selected textile dyeing and finishing wastewater
… the study included color, chemical and five-day biochemical oxygen demand, pH, dissolved oxygen, total organic carbon, ozone residual, total and suspended solids, and turbidity. The results of the investigation showed that color was removed to a significant degree from the selected wastewater by …
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Analysis of temporal trends in southern Nevada wastewater pond parameters with an emphasis on ammonia removal
… retention time (HRT), alkalinity, pH, chemical oxygen demand (COD), biochemical oxygen demand (BOD), dissolved oxygen (DO), phosphorus, nitrates, and ammonia. Data on each pond and pond system are presented including pond system comparisons; A major focus of this paper is on ammonia-N removal. …
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Aplicação e calibração de um modelo matemático de qualidade de água
… and Phelps (1925), for predicting the Dissolved Oxygen (DO) and Biochemical Oxygen Demand (BOD) concentrations resulted from the discharge of biodegradable organic waste into river systems. The study presented here analyses the pollution behavior in a river and provides a methodology to calibrate …
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Algal and protozoan response to Holocene climate change and anthropogenic impact: a case study from Sluice Pond, MA
… thecae are attributed to low dissolved oxygen (DO) in the basin. The fossil protozoan record supports the interpretation- thecamoebians were unable to colonize the basin until the middle Holocene and only became abundant when the drought-induced lowstand oxygenated the bottom waters. …
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Pilot-scale study on anaerobic/aerobic treatment of a textile dye wastewater
… for: color, total organic carbon (TOC), 5-day biochemical oxygen demand (BODs), chemical oxygen demand (COD), total phosphorus, sulfide, sulfate, total Kjeldahl nitrogen (TKN), ammonia, nitrate, chloride and oxidation-reduction potential (ORP). Nearly 50% color removal was observed during …
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A comparison of selected chemical characteristics in runoff from different land types
… investigated during the study were five-day biochemical oxygen demand (BOD₅), chemical oxygen demand, orthophosphorous, total phosphorous, nitrate, and total organic carbon. The major interest was in BOD₅ concentrations because of the importance of land runoff in stream assimilation modeling. …
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